Volvo All Engines (2017 Emissions) Fault Code: P20B992 PID: ACM Reductant Heater “A” Control
Volvo All Engines (2017 Emissions) Fault Code: P20B992 PID: ACM Reductant Heater “A” Control
Circuit description
The aftertreatment control module (ACM) uses the aftertreatment diesel exhaust fluid (DEF) dosing pressure sensor value to adjust and maintain DEF pressure at the DEF dosing valve by controlling DEF pump speed. If the pressure decreases below expected value when the pump is in initial pressure build-up mode or if the pressure increases above expected value when pump is in idle speed mode, the ACM considers DEF pressure outside of normal operating range and indicates a malfunction in a DEF dosing pressure sensor.
Conditions for diagnostic trouble code (DTC)
Insufficient aftertreatment diesel exhaust fluid (DEF) dosage
Probable cause
1) DEF tank heating valve
2) Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 1
3) Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 2
4) Actuator coolant lines
5) Damaged hoses and/or connections
6) Aftertreatment Diesel Exhaust Fluid (DEF) Pump
Related products
-
Volvo All Engines (2004 Emissions) Fault Code: PID 26 FMI 3 Fan Speed
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PPID 35 FMI 3 EGR Mass Flow Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 412 FMI 0 EGR Temperature After Cooler
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 412 FMI 5 EGR Temperature After Cooler
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 50 FMI 9 AC System Status
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PPID 35 FMI 5 EGR Mass Flow Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 158 FMI 3 Battery Voltage
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 102 FMI 3 Boost Air Pressure / Temperature Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 108 FMI 4 Ambient Pressure Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 102 FMI 2 Boost Air Pressure / Temperature Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 412 FMI 4 EGR Temperature After Cooler
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PPID 35 FMI 4 EGR Mass Flow Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 105 FMI 5 Boost Air Pressure / Temperature Sensor
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 412 FMI 3 EGR Temperature After Cooler
All Engines (2004 Emissions) -
Volvo All Engines (2004 Emissions) Fault Code: PID 171 FMI 9 Ambient Air Temperature Status
All Engines (2004 Emissions)
-
Sale!
SERVICE MANUAL 3000 AND 4000 SERIES GEN 4 GENERATION – ALLISON
Allison Original price was: $19.00.$17.00Current price is: $17.00. -
-
-
-
-
-
-
-
-
